EMC Suppression for Wiper Solutions

PSV design and manufacture complete wiper systems, including wiper arms, wiper blades, wiper motors, drive systems and linkage parts and working closely with original equipment manufacturers (OEMs), PSV offer both bespoke and aftermarket technical solutions for a range of applications such as military vehicles; construction and agriculture vehicles as well as automotive vehicle applications.

One such application is the British ‘Ocelot’ armoured vehicle where PSV worked closely with MPE in the design and implementation of a wiper solution with integral EMC suppression. Following a detailed design process, MPE provided a custom 7A, 28VDC four-line ﬁlter to PSV, ensuring the wiper motors were compliant with the stringent EMI/RFI suppression requirements of DEF STAN 59-411 Land Class A and also met the extremes of conditions that the vehicle would face in theatres of operation. Ocelot was given the name Foxhound in service, and with this custom DC filter having been supplied by MPE in production volumes since 2011, there are now over 1,000 units implemented and in service on the Foxhound vehicle.

Alongside this custom DC filter, working closely with the vehicle designers Ricardo/Force Protection, MPE also designed and supplied a custom 52A, three-line ﬁlter to ensure the same stringent EMI/RFI compliance of the compressor pump motor.

Paul Curry, PSV Managing Director commented, “It’s really important for us to develop a close working relationship with our customers and OEMs alike, so that we can fully understand the technical challenges and develop the appropriate solutions. Working closely with MPE on the Ocelot project was critical and MPE’s agile response ensured a smooth design process and a timely and effective transition into production volumes”.